Unsymmetrical polyurea-urethane fertilizer encapsulation

Details Unsymmetrical polyurea-urethane fertilizer encapsulation Unsymmetrical polyurea-urethane fertilizer encapsulation

C - Chemistry, Metallurgy

05

G

C05G 3/10 (2006.01) C05C 1/02 (2006.01) C05C 9/00 (2006.01) C05D 1/02 (2006.01) C05G 3/00 (2006.01) C08G 18/32 (2006.01) C09D 175/00 (2006.01)

Patent

CA 2273768

This invention relates to processes for the production of unsymmetrical polyurea-urethane coated granular fertilizer products, and to the unsymmetrical polyurea-urethane coated granular fertilizer products produced by these processes. These processes comprise coating fertilizer granules with compounds which react to form unsymmetrical polyurea-urethane coatings, then the compounds are polymerized. Suitable compounds comprise a) an organic polyisocyanate component, and b) an alkanolamine component containing at least one primary or secondary amine group and at least one hydroxyl group. These compounds are present in sufficient quantities that the NCO to active hydrogen group is from about 0.5:1.0 up to about 1.5:1Ø It is necessary that sufficient amounts of these compounds are applied to the fertilizer granules such that the unsymmetrical polyurea-urethane coated granular fertilizer particles contain from about 0.5 to about 15% by weight of polyurea-urethane, based on the total weight of the encapsulated fertilizer particles.

Affiliated with

Also associated with

Rating

Unsymmetrical polyurea-urethane fertilizer encapsulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Unsymmetrical polyurea-urethane fertilizer encapsulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unsymmetrical polyurea-urethane fertilizer encapsulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1699514